Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
170025goodexcellent11excellent
160020excellentexcellent21excellent
150017excellentexcellent21excellent
140018excellentexcellent21excellent
130019excellentexcellent31excellent
120024goodexcellent21excellent
110023goodexcellent21excellent
100038goodexcellent41excellent
090032goodexcellent31excellent
080036goodexcellent41excellent
070041goodexcellent41excellent
060069lightly pollutedexcellent41excellent
050091lightly pollutedexcellent81excellent
0400114moderately pollutedexcellent111excellent
0300132moderately pollutedexcellent111excellent
0200136moderately pollutedexcellent111excellent
0100126moderately pollutedexcellent121excellent
0000115moderately pollutedexcellent121excellent
2300116moderately pollutedexcellent121excellent
2200127moderately pollutedexcellent101excellent
2100131moderately pollutedexcellent91excellent
2000110moderately pollutedexcellent101excellent
1900107moderately pollutedexcellent91excellent
180094lightly pollutedexcellent81excellent